CSS timestamp value is not updating after deploying an updated theme

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.10 DXP FP2, 7.2.10.1 DXP SP1, 7.2.X, 7.2.1 CE GA2, Master
• Component/s: ~ [Archived] Themes Infrastructure
• Labels:
  • ee-ts
  • liferay-dxp-72-sp1
  • liferay-fixpack-dxp-2-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/79050

Issue
If we have a theme, and deploy an update to that theme the CSS is not being updated as the timestamp used in the resource URL is incorrect. The expectation is that the t= timestamp value should update, which should cause the browser to load a new version of the theme's main.css.

 

Steps to Reproduce

1. Startup a clean Liferay 7.2 environment with fix pack DXP-1 (to ensure we're on the latest codebase)
2. Sign in as [e-mail]
3. Deploy portal-theme.war (grab the first version from extract-and-deploy-first.zip) and wait for the deployment to complete
4. Change the Welcome Page's theme to use portal-theme, then refresh the page itself, and check the main.css URL in the browser console: for /o/portal-theme/css/main.css
5. Make note of the timestamp portion as it will be used later.
6. Wait a few minutes, and deploy portal-theme.war (use the updated one in extract-and-deploy-later.zip) and wait for the deployment to complete
7. Refresh the page, and check the main.css URL in the browser console: for /o/portal-theme/css/main.css

Actual Behavior
Assert that the timestamp portion of the URL is the exact same value as the one from portal-theme (1.0.3)

Expected Behavior
portal-theme should have an updated timestamp since we waited a few minutes to deploy the updated theme (1.0.4).

Reproduced in
7.2 + DXP-1
Master private Commit: 134a7024145d7b051239869fce69b2a46d4c2fb0
7.2.x private Commit: 56bc208f4561e5a0319db6d9633967cfaf3dd416